Calculating daylight saving time from only date

Question

I am working with an Arduino and a real time clock chip. The chip compensates for leap years and such, so it will always have the correct date, but it does not handle daylight s

Answer 1

I am trying with this approach and I think it simple and accurate:

// for first Sunday of March as if DoW = 1 for Sunday if (month==3 && day>=8 && day <=14 && DoW=1) return True

// for second Sunday of Nov as if DoW = 1 for Sunday if (month==11 && day>=1 && day <=7 && DoW=1) return True